Learning that Mícheál is HIV positive, a panic-stricken Paddy goes to get tested. Meanwhile, Brian goes to heroic lengths to win Grace back.

The gang put their troubles behind them and head for the coast. Meanwhile, Paddy and Mícheál's day of bliss takes a seriously dark turn.

As the gang celebrate St. Patrick's Day, a desperate Linda decides to take her own life. Meanwhile, Brian tries to take his mind off Grace, but finds he's unable to let go.

From his hospital bed, a crippled Steve delivers a terrible ultimatum to Brian. Elsewhere, Grace makes sure the truth about her father finally comes out.

Devastated by Eithne's death, the group grieve and celebrate the life of their friend. Meanwhile, tormented by his actions, Steve decides to turn himself in to the police.

With unconscious Eithne trapped in the college fire, a rescue team races to the scene. Meanwhile, with the walls closing in on Steve, he takes deadly measures to save himself.

As frantic Caroline races to get Steve's taped confession to the police, Pete takes the law into his own hands exacting devastating revenge on Steve.

It's the end of an era as the group graduate. Before they go their separate ways, Decko endeavours to win Caroline's heart and Joanne reunites with an old flame. Show more